TrojanDownloader_O97M_Obfuse_JK_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.JK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Obfuse_JK_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.JK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {70 6f 6c 61 6f 74 6f 73 20 3d 20 22 70 22 } 		$a_01_1 = {70 6f 6c 6f 6f 74 73 20 3d 20 22 68 22 } 		$a_01_2 = {68 6f 74 67 75 61 73 65 20 3d 20 22 74 22 } 		$a_01_3 = {6b 6f 61 73 6d 78 6a 77 20 3d 20 22 73 3a 2f 22 } 		$a_01_4 = {6b 64 6a 6b 65 75 72 67 20 3d 20 22 2f 25 39 30 39 31 32 33 69 64 25 39 30 39 31 32 33 69 64 25 39 30 39 31 32 33 69 64 25 39 30 39 31 32 33 69 64 25 39 30 39 31 32 33 69 64 40 6a 2e 6d 70 5c 6b 61 73 73 61 61 73 64 73 6b 64 64 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

1287464a-8621-4468-ab01-e633203444c1

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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